The metadata below describe the original scanning. Follow the "All Files: HTTP" link in the "View the book" box to the left to find XML files that contain more metadata about the original images and the derived formats (OCR results, PDF etc.). See also the What is the directory structure for the texts? FAQ for information about file content and naming conventions.
J.A. Chapleau and J.H. Gray, commission
App. A. "Abstract of evidence taken before a Joint committee composed of a committee of the Senate and a committee of the House of representatives of the United States, which commenced its sittings at San Francisco, October 18th, 1876."